Django-ninja-simple-jwt

What's Changed
* Add ability to use a callable in customizing token claim by oscarychen in https://github.com/oscarychen/django-ninja-simple-jwt/pull/17
* Web sign out by oscarychen in https://github.com/oscarychen/django-ninja-simple-jwt/pull/18
* fix bug in HttpJwtAuth introduced by callable token claim mapping by oscarychen in https://github.com/oscarychen/django-ninja-simple-jwt/pull/19
* Update default setting TOKEN_CLAIM_USER_ATTRIBUTE_MAP by oscarychen in https://github.com/oscarychen/django-ninja-simple-jwt/pull/21


**Full Changelog**: https://github.com/oscarychen/django-ninja-simple-jwt/compare/0.5.0...0.6.1

Updated django settings to allow separating the storages used to store private and public keys:

JWT_PRIVATE_KEY_STORAGE
Storage class instance used to store JWT private signing key. Defaults to `"ninja_simple_jwt.jwt.key_store.local_disk_key_storage"`.

JWT_PUBLIC_KEY_STORAGE
Storage class instance used to store JWT public verification key. Defaults to `"ninja_simple_jwt.jwt.key_store.local_disk_key_storage"`.